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Method for controlling bio-slimes in a clean circulating water system through a physical-chemical-superconducting high gradient magnetic separation coupling process
US2021017051A1 · US · A1
| Field | Value |
|---|---|
| Publication number | US-2021017051-A1 |
| Application number | US-202016920643-A |
| Country | US |
| Kind code | A1 |
| Filing date | Jul 3, 2020 |
| Priority date | Jul 16, 2019 |
| Publication date | Jan 21, 2021 |
| Grant date | — |
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Abstract
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There is provided a method for controlling bio-slimes in a clean circulating water system through a physical-chemical-superconducting high gradient magnetic separation coupling process. An inorganic composite flocculant is added to circulating water to gather Zoogloea in the circulating water with micro-nano particles in hydrosol through demulsification to form alum floc. The resulting water passes through a superconducting high gradient magnetic separation system. A magnetic field strength of the superconducting high gradient magnetic separation system and flow rate of the circulating water are controlled to generate strong magnetic flocculation to allow floc to grow, such that the Zoogloea in the circulating water wraps the micro-nano particles to separate the Zoogloea from water.
First claim
Opening claim text (preview).
What is claimed is: 1 . A method for controlling bio-slimes in a clean circulating water system through a physical-chemical-superconducting high gradient magnetic separation (HGMS) coupling process, comprising: 1) adding an inorganic composite flocculant to circulating water to gather Zoogloea in the circulating water with micro-nano particles in hydrosol through demulsification to form alum floc; and 2) passing the resulting water obtained in step (1) through a superconducting high gradient magnetic separation system; controlling a magnetic field strength of the superconducting high gradient magnetic separation system and flow rate of the circulating water, such that the Zoogloea in the circulating water wraps the micro-nano particles to separate the Zoogloea from water. 2 . The method of claim 1 , wherein the inorganic composite flocculant in step (1) has a micro-nano branched structure with a boric acid and a silicate group. 3 . The method of claim 1 , wherein the amount of the inorganic composite flocculant in step (1) is 10-80 mg/L. 4 . The method of claim 1 , wherein in step (2), the magnetic field strength of the superconducting high gradient magnetic separation system is 1.5-4.0 T, and the flow rate of the circulating water is 0.5-4 mm/s.
Assignees
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Classifications
- C02F1/484Primary
using electromagnets · CPC title
Installations for water purification using chemical agents · CPC title
Water in cooling circuits · CPC title
Prevention of biofouling · CPC title
Nanoparticles or nanotubes · CPC title
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- What does patent US2021017051A1 cover?
- There is provided a method for controlling bio-slimes in a clean circulating water system through a physical-chemical-superconducting high gradient magnetic separation coupling process. An inorganic composite flocculant is added to circulating water to gather Zoogloea in the circulating water with micro-nano particles in hydrosol through demulsification to form alum floc. The resulting water pa…
- Who is the assignee on this patent?
- Univ Beijing Science & Technology, Beijing Mild Tech Co Ltd
- What technology area does this patent fall under?
- Primary CPC classification C02F1/484. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Thu Jan 21 2021 00:00:00 GMT+0000 (Coordinated Universal Time) (A1). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).